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bpo-35189: Fix eintr_tester.py #10637

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Merged
vstinner merged 1 commit into from
Nov 21, 2018
Merged

bpo-35189: Fix eintr_tester.py #10637

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40 changes: 18 additions & 22 deletions Lib/test/eintrdata/eintr_tester.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,27 +44,32 @@ class EINTRBaseTest(unittest.TestCase):
# sleep_time > signal_period
sleep_time = 0.2

@classmethod
def setUpClass(cls):
cls.orig_handler = signal.signal(signal.SIGALRM, lambda *args: None)
signal.setitimer(signal.ITIMER_REAL, cls.signal_delay,
cls.signal_period)
def sighandler(self, signum, frame):
self.signals += 1

# Issue #25277: Use faulthandler to try to debug a hang on FreeBSD
def setUp(self):
self.signals = 0
self.orig_handler = signal.signal(signal.SIGALRM, self.sighandler)
signal.setitimer(signal.ITIMER_REAL, self.signal_delay,
self.signal_period)

# Use faulthandler as watchdog to debug when a test hangs
# (timeout of 10 minutes)
if hasattr(faulthandler, 'dump_traceback_later'):
faulthandler.dump_traceback_later(10 * 60, exit=True,
file=sys.__stderr__)

@classmethod
def stop_alarm(cls):
@staticmethod
def stop_alarm():
signal.setitimer(signal.ITIMER_REAL, 0, 0)

@classmethod
def tearDownClass(cls):
cls.stop_alarm()
signal.signal(signal.SIGALRM, cls.orig_handler)
def tearDown(self):
self.stop_alarm()
signal.signal(signal.SIGALRM, self.orig_handler)
if hasattr(faulthandler, 'cancel_dump_traceback_later'):
faulthandler.cancel_dump_traceback_later()
# make sure that at least one signal has been received
self.assertGreater(self.signals, 0)

def subprocess(self, *args, **kw):
cmd_args = (sys.executable, '-c') + args
Expand Down Expand Up @@ -481,14 +486,5 @@ def test_devpoll(self):
self.assertGreaterEqual(dt, self.sleep_time)


def test_main():
support.run_unittest(
OSEINTRTest,
SocketEINTRTest,
TimeEINTRTest,
SignalEINTRTest,
SelectEINTRTest)


if __name__ == "__main__":
test_main()
unittest.main()